baber/WOPTO huggingface dataset:
Patent GB-1225656-A (GB)
IPC: B60T1/087
Filed: 1968-06-18
Abstract: 1,225,656. Hydrodynamic brakes. ALFRED TEVES G.m.b.H. 18 June, 1968 [15 Dec., 1967], No. 29005/68. Heading B7H. [Also in Division F2] The casing 1 of a hydrodynamic brake having a rotor 12 secured to the propeller shaft 14 of a motor vehicle is carried by an auxiliary frame 2, 3 which bears on chassis members 5, 6 from above and below respectively through the pistons 9, 10 of hydraulic buffer cylinders 7, 8 interconnected by a hose or pipe 11. Interchange of fluid between the cylinders 7, 8 through the pipe 11 accommodates movement of the propeller shaft 14 relative to the chassis and twisting of the chassis.
Patent GB-1226715-A (GB)
IPC: B30B11/24
Filed: 1969-07-23
Abstract: 1,226,715. Rotary screw extrusion press. O. BRATEN. 23 July, 1969 [31 July, 1968], No. 36967/69. Heading BID. An extrusion press whose two screws 8, 10 rotate in the same direction has a driving system wherein identical gears 16, 18, axially spaced apart along the respective screw shafts 12, 14, both mesh with a single axially extended pinion 20, from which power is transmitted to the screws. This system enables greater power transmission and higher pressures to be achieved than hitherto.
Patent GB-1226846-A (GB)
IPC: B60G7/00
Filed: 1968-04-30
Abstract: 1,226,846. Automatic exchange systems. WESTERN ELECTRIC CO. Inc. 30 April, 1968 [2 May, 1967], No. 20370/68. Heading H4K. Net magnetomotive force in line transformers, particularly in systems having PNPN crosspoint networks having a holding current in the talking path, is reduced with consequent reduction in transformer cost by providing an optical coupling between each line loop and corresponding exchange loop so that the resistance of an exchange loop is automatically adjusted about a mean value to provide a current balancing the current in the line loop. As shown in Fig. 1 photon-emissive gallium arsenide diodes 120, 121, in the line loop control respective photonsensitive resistors 133, 134 in the exchange loops. Variations in length of line loop result in loop currents between 10 and 50 milliamperes. In an alternative arrangement, Fig. 2, not shown, a single photon-sensitive resistor between a centre-tap on the transformer secondary and earth is employed, the resistor being controlled by photon-emissive diodes in both legs of the line loop.
Patent GB-1228506-A (GB)
IPC: H01H19/00
Filed: 1969-02-12
Abstract: 1,228,506. Regulating switches. PYE Ltd. 26 Nov., 1969 [12 Feb., 1969], No. 7634/69. Heading H1N. [Also in Division H4] A variable resistor comprises a body of insulating material 1 having a recess 2 containing a disc 3 of insulating material on which is formed a thick film resistance track and areas of conductive material. Part of the periphery protrudes from the recess such that the disc may be turned. Spring contacts are secured to the body 1 and engage various conductive portions. Stops may be provided, Figs. 3-5 (not shown), to limit the possible angle of disc rotation. In a further embodiment, Figs. 6, 7 (not shown), the contact areas are extended to the periphery of the disc and a spring contact engages a central contact area on the reverse side of the disc- The resistive elements may be covered with a protective coating.
Patent GB-1232142-A (GB)
IPC: A01B45/04
Filed: 1969-03-11
Abstract: 1,232,142. Turf cutters. "SISIS" EQUIPMENT (MACCLESFIELD) Ltd. 11 March, 1970 [11 March, 1969], No. 12672/69. Heading A1E. A turf cutting machine comprises a wheeled chassis having at least one pair of rotary cutters and a horizontal blade for separating a strip of turf and means for adjusting the depth of both the rotary cutters and the blade. The rotary cutters 16 are mounted on the chassis and the rear castor wheels 21 are mounted by a linkage mechanism comprising links 24 pivoted to the chassis about an axis 26 at their forward ends, and links 27 which are pivoted at one end to links 24 and at the other end to links 28 which are fixed on a shaft 29 rotatably mounted on the chassis. The rear wheels 21 pivot about tubular members 18 which are attached by brackets 17 to the links 24. An arm 33 lockable by the engagement of a pin in one of the holes 31 is fixed to the shaft 29 such that rotation of the arm 33 raises or lowers the rear wheels. The output shaft from an engine 46 drives a pulley 49 via a belt drive 47 having a tensioner 50 pivotable by means of a lever control 51 on the handle 45 of the machine which thereby acts as a clutch mechanism. The rotary cutters are driven by a chain connected to the shaft of pulley 49 and a further chain drive from the axle 15 of the rotary cutters drives the front wheels 13 such that the peripheral speed of these wheels is less than that of the cutters 16. Rotatably attached to the rear of the machine by members 61 and 62 is a transversely extending blade 69 biased into a cutting position by spring 71 such that the strip of turf is cut into discrete lengths. The machine may be driven from the P.T.O. of a tractor and the cutting of the strip of turf into lengths may alternatively be effected by a reciprocable cutter.
Patent GB-1239548-A (GB)
IPC: C09B/
Filed: 1970-02-02
Abstract: 1,239,548. Yellow pyrazolone dyes. CROMPTOM & KNOWLES CORP. 2 Feb., 1970 [6 March, 1969], No. 4923/70. Heading C4P. The invention comprises yellow pyrazolone dyes of the general formula wherein M is -H, -Na, -K or -NH 4  and R is -CH 3  or -Cl. The dyes are obtained by coupling diazotized Tobias acid (2-amino-1- naphthalene sulphonic acid) to a correspondingly structured pyrazolone.
Patent GB-1251954-A (GB)
IPC: E21D9/10
Filed: 1967-12-12
Abstract: 1,251,954. Mine roads-ripping apparatus. MAVOR & COULSON Ltd. 20 Nov., 1968 [12 Dec., 1967], No. 5478/71. Divided out of 1,251,953. Heading E1F. In a mine road-ripping apparatus having two, ram-interconnected sets of skids 10, 20, one set of skids 10 supports the cutting means 1 of the apparatus and, by jacks, transversely extending roof supports 18 spaced from each other longitudinally of the machine and the other set of skids 20 supports, by jacks, further similarly disposed roof supports 2 so that step by step propulsion of the apparatus can be obtained by appropriate actuation of the rams and jacks. The apparatus may include the cutter means and front apron structure of the referred to Specification 1,251,953.
Patent GB-1258134-A (GB)
IPC: H01J1/13
Filed: 1969-02-12
Abstract: 1,258,134. Electron guns. INTERNATIONAL STANDARD ELECTRIC CORP. 12 Feb., 1969 [17 Feb., 1968], No. 7658/69. Heading H1D. An electron gun for a television picture tube comprises a Wehnelt cylinder 1 across which extends an insulator disc 2 which supports a cathode heating ribbon strung across a diameter of the disc. In Fig. 1 the disc 2 is provided with an annular projection 20 across which extends a cathode heating ribbon (not shown in Fig. 1) supporting a cathode 10 and held in tension in grooves in the projection 20 by means of two quadrantal springs 6 secured to the disc by respective eyelets 4. The cathode 10 is preferably a sintered pellet of nickel powder impregnated with electron emissive material. In a modification, Figs. 3 and 4 (not shown) the annular projection 20 is omitted and the heating ribbon is supported by L-shaped springs. In a further arrangement, Figs. 5 and 6 (not shown) the heating ribbon is itself of springy material with its ends secured in the eyelets 4 so that it is bowed away from the disc 2.
Patent GB-1267181-A (GB)
IPC: B23K11/00
Filed: 1970-01-14
Abstract: 1,267,181. Welding by pressure. NIPPONDENSO K.K. 14 Jan., 1970 [19 Feb., 1969], No. 1877/70. Heading B3R. A tubular metal member 10 has a flange 11 with a flat surface which is held in pressure contact with another flat surface of a metal member 30 which may be a vessel for a pressurized fluid and the two members butt welded by electrical resistance heating. The flange 11 is formed by placing the member 10 in a pair of mould cavities 21a, 22a, Fig. 2, and the moulds 21, 22 are forced together. The total axial length of the cavities is smaller than the length of the tubing 10 so that the peripheral part of the tubing is forced into cavities 21b, 22b to form an annular flange 11. An end of the tubing is placed in a hole in the member 30 so that the flange abuts against the wall of the member and an electrode 40 applies pressure to the flange and supplies current to carry out the electrical resistance weld.
Patent GB-1290448-A (GB)
IPC: H01P1/212
Filed: 1970-02-16
Abstract: 1290448 Waveguide filters NIPPON ELECTRIC CO Ltd 16 Feb 1970 [14 Feb 1969] 7331/70 Heading H1W In order to prevent unwanted resonance at harmonic frequencies in a band-pass microwave filter, the length of the (or each) waveguide resonant section is chosen such that the undesired resonances are rejected and the section is loaded with capacitive reactances which affect only the fundamental wave-mode energy. It is shown that, if the value l/# c  (cavity length I normalized with respect to the waveguide cutoff frequency # c ) lies between 0À2 and 0À3, higher wave modes do not give rise to cavity resonance at the second harmonic, i.e. at values of f/f c  between 2À8 and 3À6 assuming desired values of f/f c  between 1À4 and 1À8 for the fundamental TE 101  mode. However, the value of resonant length l necessary for this result produces a value f/f c =2À7 for the fundamental mode and, in order to reduce this to the desired range between 1À4 and 1À8, the resonant section is capacitively loaded. Only the higher modes TE 102 , TE 301  and TE 202  normally have resonant frequencies sufficiently low to produce undesirable second-harmonic resonances. The capacitive loading is therefore located at points in the resonant section where the electric field of these modes is null. In the embodiment shown, the resonant section is defined by rows of posts 44, 44<SP>1</SP> and is of length # g /3 instead of the usual # g /2, i.e. the value of l/# c  is chosen as explained above. Capacitive studs 41, 41<SP>1</SP> are necessary to produce resonance and these are inserted at the intersection of the longitudinal trisectors 42, 42<SP>1</SP> and the transverse bisector 43 of the section. It is shown in the Specification that the electric field of the relevant higher modes is null at these points. The TE 201  mode is rejected because of the symmetry of the filter. Other arrangements of capacitive studs are possible (Figs. 7-10, not shown). Further, the invention may be applied to multi-stage filters and is not confined to rectangular waveguides. The rods 44 may be replaced by irises.
Patent GB-1294933-A (GB)
IPC: G11C17/16
Filed: 1970-03-06
Abstract: 1294933 Read only memory WESTERN ELECTRIC CO Inc 6 March 1970 [10 March [6961 10756/70 Heading G4A The invention relates to the production of a read-only memory of the type having a matrix of impedance elements by destroying selected resistors in a matrix having resistors at all cross over points. A central control 20 operates registers 21, 22 to apply selected voltages to the rows and columns of matrix 10. Initially all flip-flop stages of the registers are reset and then at time to a voltage of V/3 is applied to all the row conductors 11-13 where a voltage V applied across one of the resistors is sufficient to destroy the resistor. At time t 1  the columns not coupled to resistors to be destroyed are biased to a voltage of 2V/3. At time t 2  a row coupled to one or more resistors to be destroyed is biased to a voltage V. Resistors to be destroyed then have a voltage V across them while all other resistors have a maximum of V/3 across them. At t 3  the voltage V is removed and at t 4  the voltage 2V/3 is removed. Resistors coupled to a further row can then be destroyed.
Patent GB-1301381-A (GB)
IPC: B21K27/06
Filed: 1970-01-20
Abstract: 1301381 Shearing; forging GEPIPARI TECHNOLOGIAI INTEZET 20 Jan 1970 [22 Jan 1969] 2777/70 Headings B3H and B3W Bar or wire stock 4 is sheared by movement of an apertured cutter 1 relative to fixed cutter 2 while the stock is under stress produced by plastic deformation caused by a mandrel 5 driven into the portion of the stock located in the aperture 1a of cutter 1. The aperture la may differ from the aperture 2a of fixed cutter 2 in shape and dimensions. Feedblocks 3 also apply stress to the stock. In alternative apparatus, Figs. 2 and 3 (not shown), the die apertures are shaped to form a cylindrical stock portion in cutter aperture 1a and a frusto-conical portion leading to, and of lesser diameter than, the cylindrical stock portion in cutter aperture 2a when the leading end of the stock is impacted by a mandrel (5a).
Patent GB-1304004-A (GB)
IPC: A45C5/00
Filed: 1969-07-01
Abstract: 1304004 Travel cases and trunks WEATHERSHIELDS Ltd 30 Sept 1970 [1 July 1969] 33170/69 Heading B8P A suit case, attache case or a trunk comprises two moulded plastics shells 10, 11 hinged together to form a base and a lid respectively, reinforcing edging frames 12, 13 provided around the edges of the shells 10, 11 and a self-adhesive sealing strip 31 of resilient plastics material secured to a face 30 of the edging frame 13. The sealing strip 31 has a V-shaped crosssectional configuration and mates, as shown, with a nose 17 formed on the edging frame 12.
Patent GB-1305016-A (GB)
IPC: G02B27/28
Filed: 1969-05-05
Abstract: 1305016 Sensing relative rotation of two members LANSING BAGNALL Ltd 5 May 1970 [5 May 1969] 22880/69 Heading G1A A device for sensing relative rotational displacement between a pair of relatively rotatable members comprises two relatively rotatable elements for rotation with said members respectively, one element having two bodies of light polarizing material disposed opposite a light polarizing material on the other element, a light source arranged to transmit light through the bodies, and two light sensitive devices disposed to receive the light thus transmitted, the bodies being orientated to polarize the light in such planes that when relative rotation occurs from a datum position the angle between the polarization planes in one pair increases and in the other pair decreases. In one embodiment Figs. 1, 2, a power steering transmission system for vehicles, a steering column comprises two shafts 10, 11 connected by a torsionally resilient coupling 12. A disc 15 of light polarizing material, that has a plane of polarization represented by arrow 17 Fig. 2, is attached to shaft 10 and a disc 16 comprising two parts 18, 20, that have planes of polarization represented by arrows 19, 21 respectively, is attached to shaft 11. A light source 22 transmits light through the discs 15, 16 on to photo resistive devices 23 and 24. Initially when no torque is applied to steering wheel 13 photo resistors 23, 24 receive equal intensities of light, but as the steering wheel is turned the relative movement of discs 15, 16 causes the intensity received by one to increase and the intensity received by the other to decrease. A pulse control system 26 responds to these changes to operate a motor 27 to apply an assisting torque to the shaft 11 through gearing 28. Shafts 10, 11 may be so coupled that a predetermined minimum torque is required to cause relative rotation between them and thus activate the power assisted steering. A more detailed and practical power assisted steering system is also disclosed Figs. 3, 4 (not shown).
Patent GB-1313141-A (GB)
Title: Fibre assemblies and their production
IPC: D04H13/00
Filed: 1969-10-14
Abstract: 1313141 Film fibrillation MONSANTO CHEMICALS Ltd 18 Sept 1970 [14 Oct 1969] 50294/69 Headings D1R R3B1 R3C2Y R3C2A R3C2B R3C2C R3C2E R3C2F R3C2G R3C2J R3C2P R3C2X R3C5X and R3D2X A three-dimensional structure of a multiplicity of inter-connecting thermoplastic fibre elements containing a plurality of non-fibrous biaxially drawn thermoplastic film elements inter-connected to the fibre elements may be made by biaxially orientating a sheet of foamed thermoplastic resin so as to orientate the cell walls, and thereafter fibrillating the sheet. The resin is preferably polyethylene or polypropylene, other suitable resins being listed. The proportion of film elements in the product may be 1-30% and they may be 0À0001-0À004 inch thick and have an average surface area of 0À001-0À015 in<SP>2</SP>. From 5-70% of the fibres may exhibit branches, the distance between branches being 5-1000 times their average thickness, which may be 0À0001-0À005 inch. They may have a breadth/thickness ratio of 3/1 to 30/1. The starting sheet may be ¢-6 inches thick and 1-54 inches wide. The draw may be 2-5x transversely and 2-4x longitudinally at 100- 170‹C, each draw being effected successively or simultaneously. Fibrillation is effected conventionally by mechanical methods.
Patent GB-1315303-A (GB)
Title: Carbon content analysis
IPC: G01N33/20
Filed: 1969-06-13
Abstract: 1315303 Measuring the carbon content in fluids UNITED KINGDOM ATOMIC ENERGY AUTHORITY 9 June 1970 [13 June 1969] 30212/69 Heading B1X Apparatus for measuring the carbon content of, e.g. molten metals, flowing through a furnace 13, comprises a chamber 14 of a material in which carbon is both soluble and mobile, e.g. a suitable carbide or refractory material, Fe, Ni or their alloys, and which has an internal layer 15 of a solid decarburant, e.g. FeO. The carbon diffusing reacts with the decarburant to form a gaseous carbon oxide which is then detected in some way, e.g. by gas chromatography or by pressure measurement. The product gases may be pumped out, Figs. 2 and 3 which depict a one conduit chamber (not shown) or they may be swept out by a carrier gas.
Patent GB-1325328-A (GB)
Title: Image analysis
IPC: G01B11/02
Filed: 1971-10-26
Abstract: 1325328 Image analysis IMAGE ANALYSING COMPUTERS Ltd 26 Oct 1971 [20 Nov 1970] 55189/70 Heading G4H [Also in Division G1] In an arrangement for analysing an image of a field specimen 22, Fig. 5 containing transparent and translucent regions, in which the image is focused on a photo-sensitive target which is scanned to produce a video type signal and whereon transparent optical element 26 carrying an opaque pattern of lines is introduced between the source 18 and the photo-sensitive target also to produce an image on the target whereby distinct pulse signals are produced during the scanning of transparent regions, means 32 are provided for effecting continual realtive movement between the pattern image and the target to reduce or prevent the burning of inter pattern lines on the photo-sensitive surface of the target. The pulses may be counted to determine a dimension in the scanned direction or the transparent area.
Patent GB-1328292-A (GB)
Title: Abrasive devices
IPC: B24D15/04
Filed: 1972-03-22
Abstract: 1328292 Abrasive tools T H N BROGDEN 22 March 1972 [8 April 1971] 9149/71 Heading B3D An abrasive device comprises a block or pad of resiliently deformable material formed from fragments of cellular material bonded together, and abrasive particles secured to one or more faces of the block by means of a flexible adhesive. The block may be rectangular, triangular or circular and shaped for manual handling, and consist of chips of cellular polyether or polyester material bonded together by flexible solid material. The abrasive, such as ground glass, garnet, aluminium oxide or carborundum, is secured to one or more sides of the block by a synthetic rubber based adhesive, different grades being secured to different faces. The block may be in the form of a sheet for attachment to a rotary or orbital sanding device.
Patent GB-1333627-A (GB)
Title: Mining machines
IPC: E21C35/22
Filed: 1971-02-22
Abstract: 1333627 Mining machines CONFLOW Ltd 10 Feb 1972 [23 Feb 1971] 5196/71 Heading E1F A mining machine has safety means involving the association of a lock with the starter of the drive motor of the cutter means of the machine and this lock is such that it cannot be withdrawn clear of the starter until a predetermined time has elapsed after commencement of emission of dust supression fluid in the region of the cutter means. The delay is regulated by bleeding off fluid from a conduit of the dust suppression fluid-supply system and passing the fluid through a restriction before it directly or indirectly actuates the lock-controlling means. Said means may be a pistoncylinder unit of which the piston rod thereof can engage one or two projections, e.g., one or two opposed, spring-biassed pawls, on a shaft of the starting handle of the motor or can carry a guard that can prevent access to a push button of a starter switch of the motor. The restriction can involve an adjustable aperture needle valve and can be bypassed, the bypass having a lightly loaded, spring biassed, non-return valve allowing of release of fluid from the lock-actuating means. The machine may also have an audible warning device operated by fluid bled off from the dust suppression fluid supply.  (For Figures see next page)
Patent GB-1340397-A (GB)
Title: Stable vinyl acetate n-methylolacrylamide latexes with polyvinyl alcohol
IPC: C08F20/00
Filed: 1971-10-26
Abstract: 1340397 Vinyl acetate/N-methylolacrylamide latexes BORDEN Inc 26 Oct 1971 49598/71 Heading C3P A stable aqueous latex of vinyl acetate/N- methylolacrylamide copolymer is prepared by dispersing vinyl alcohol in an aqueous medium containing polyvinyl alcohol and an anionic surfactant, adding a free radical initiator and then adding 0À5-10% based on vinyl acetate, of N-methylol acrylamide at a rate of 0À01- 0-03% per minute. The process is used to prepare latexes containing polyvinyl alcohol which is at least 91% hydrolysed or is 80-90% hydrolysed with a viscosity of 30-60 cp. In examples sodium lauryl sulphate and tetra sodium N-(1,2-dicarboxyethyl)-N-octadecyl sulphosucoinamate are used as anionic surfactant and ammonium persulphate as free radical initiator. The latex is used as an adhesive, either on its own or with aluminium chloride as a catalyst, for example for laminating wood for plywood &c.
Patent GB-1351049-A (GB)
Title: Device for measuring shaft rpm
IPC: H03K21/08
Filed: 1971-10-06
Abstract: 1351049 Measuring shaft RPM LUMENITION Ltd 2 Oct 1972 [6 Oct 1971] 46479/71 Heading G4H [Also in Division G1] The speed of rotation of a shaft is indicated by generating electric pulses by the rotation and applying them to a ring counter via a gate which is repeatedly opened for a predetermined time, which is a multiple, for example 30, of the pulse period at a desired speed, the counter position at the termination of the period being indicative of the pulse frequency and thus of the R.P.M. The counter positions may be connected to an arc or line of gallium phosphide lamps for a standing indication. The pulses may be generated by, for example, a maltese cross type disc having a 2 : 1 mark to space ratio rotating between a gallium arsenide lamp and a photocell which may be a Darlington pair. A multistage fast trigger switch is described.
Patent ID-28449-A (ID)
Inventor: BUIJS WIM
IPC: B01J19/18
Filed: 1999-10-22
Abstract: The invention relates to a method for the hydrolytic polymerisation of epsi-caprolactam to polyamide-6, comprising a step (a) in which ring opening of part of the epsi-caprolactam to the corresponding amino caproic acid is effected in the presence of water and a step (b) in which polyaddition and polycondensation are effected under preferably anhydrous reaction conditions, in which at least one of the steps (a) and (b) is carried out in a reactor in which a self-renewing interface between the molten phase and the gas phase with a large surface/volume ratio of the molten phase is effected. The method is preferably effected in an horizontal scraped-surface reactor, since relatively strong mixing of the molten phase can be achieved in these and the molten phase is present in a thin layer, a large gas volume is present having a relatively high partial pressure of the water vapour and the thin layer is constantly renewed by shear forces. The method can be carried out in one reactor, preferably with several reaction zones, or with several reactors in series.